oscillator

a technology of oscillator and oscillator, which is applied in the direction of oscillator generator, electrical apparatus, etc., can solve the problems that the oscillator cannot follow the ultrahigh-speed modulation, and the negative differential resistance element cannot be modulated at ultrahigh speed
US20120068778A1Active Publication Date: 2012-03-22CANON KK
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
CANON KK
Publication Date
2012-03-22

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Abstract

An oscillator which oscillates electromagnetic waves includes a negative differential resistance element, a resonator configured to prescribe oscillation frequencies of the electromagnetic waves, a voltage modulation unit configured to modulate the negative differential resistance element, a stabilizing circuit configured to suppress parasitic oscillation, and a bias circuit, including a power supply and a line, used to control an operating point voltage of the negative differential resistance element. The voltage modulation unit is connected to the bias circuit through the stabilizing circuit.
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Description

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to oscillators used as oscillation mixer apparatuses including negative differential resistance elements for generating electromagnetic waves. The present invention particularly relates to an oscillator which oscillates electromagnetic waves in a frequency band within a frequency region from a millimeter waveband to terahertz waveband (equal to or larger than 30 GHz to equal to or smaller than 30 THz).

[0003] 2. Description of the Related Art

[0004] As has been broadly recognized, a negative differential resistance element is useful in an application field of oscillators which generate electromagnetic waves when being used with a resonator. The negative differential resistance element generates electromagnetic waves (hereinafter simply referred to as terahertz waves) including at least a number of frequency components in the frequency band in the range from the millimeter waveband to the terahe...

Claims

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